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51 lines
1.3 KiB
C++
51 lines
1.3 KiB
C++
/*
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* Copyright (c) 2016-present The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/ZLMediaKit/ZLMediaKit).
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*
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* Use of this source code is governed by MIT-like license that can be found in the
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* LICENSE file in the root of the source tree. All contributing project authors
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* may be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef SDLAUDIOMIXER_SDLAUDIODEVICE_H_
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#define SDLAUDIOMIXER_SDLAUDIODEVICE_H_
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#include <mutex>
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#include <memory>
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#include <stdexcept>
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#include <unordered_set>
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#define DEFAULT_SAMPLERATE 48000
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#define DEFAULT_FORMAT AUDIO_S16
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#define DEFAULT_CHANNEL 2
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#define DEFAULT_SAMPLES 2048
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class AudioSRC;
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//该对象主要实现sdl混音与播放
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class SDLAudioDevice : public std::enable_shared_from_this<SDLAudioDevice>{
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public:
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using Ptr = std::shared_ptr<SDLAudioDevice>;
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~SDLAudioDevice();
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static SDLAudioDevice &Instance();
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void addChannel(AudioSRC *chn);
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void delChannel(AudioSRC *chn);
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private:
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SDLAudioDevice();
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void onReqPCM(char *stream, int len);
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private:
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SDL_AudioDeviceID _device;
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std::shared_ptr<char> _play_buf;
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SDL_AudioSpec _audio_config;
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std::recursive_mutex _channel_mtx;
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std::unordered_set<AudioSRC *> _channels;
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};
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#endif /* SDLAUDIOMIXER_SDLAUDIODEVICE_H_ */
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